Influence of Nonhydrocarbon Compounds in Non-Hydrogenated Sour Water on Stripping Unit

Related Articles

Abstract There was a large number of organic compounds that were insoluble in liquid ammonia in the three-stage dephlegmator of stripping unit. The content of basic nitrogen can reach up to 5.94×10⁴ μg·g^-1. The organic phase was cut to six distillate fractions via engler distillation, and the compositions of fractions were analyzed via gas chromatography-mass spectrometry, respectively. The analytical results show that the basic organic compounds are pyridine, mono-substituted and poly-substituted methyl pyridine, aniline, mono-substituted and poly-substituted methyl aniline. The acidic compounds are mainly di-substituted and tri-substituted methyl phenols. In addition, large amount of 2,4,7-trimethyl-naphthyridine and a small amount of indole, quinoline and acridine compounds are also detected in the fractions. The generation of these compounds may be attributed to the Skraup reaction between pyridine, aniline compounds and unsaturated aldehyde/ketones. Liquid in the three-stage dephlegator can't be suitable to return to the sour water tank, because the non-hydrocarbon compounds can create fouling contaminant in the stripping unit by some reactions and have some adverse impacts on the ammonia compressor.

	Service

	Email this article
	Add to my bookshelf
	Add to citation manager
	Email Alert
	RSS
	Articles by authors
	Chen Feiyang
	Li Fei
	Jiang Heng
	Zhao Shanlin

Keywords： sour water； stripping； three-stage dephlegmator； phenol； aniline

Received 2017-04-10;

About author:

Cite this article:

Chen Feiyang, Li Fei, Jiang Heng, Zhao Shanlin.Influence of Nonhydrocarbon Compounds in Non-Hydrogenated Sour Water on Stripping Unit[J] Chemcial Industry and Engineering, 2018,V35(6): 67-71

[1] Hwang Y L, Keller G E, Olson J D. Steam stripping for removal of organic pollutants from water. 1. Stripping effectiveness and stripper design[J]. Industrial & Engineering Chemistry Research, 1992, 31(7):1753-1759
[2] 李菁菁. 酸性水汽提技术[J]. 炼油设计, 1998, 28(6):61-64 Li Jingjing. Stripping of sour water[J]. Petroleum Refinery Engineering, 1998, 28(6):61-64(in Chinese)
[3] Hwang Y L, Olson J D, Keller G E. Steam stripping for removal of organic pollutants from water. 2. Vapor-Liquid equilibrium data[J]. Industrial & Engineering Chemistry Research, 1992, 31(7):1759-1768
[4] 艾克利, 康钰海, 高斌霞. 酸性水汽提装置技术改进及运行问题研究[J]. 全面腐蚀控制, 2012, 26(7):44-49 Ai Keli, Kang Yuhai, Gao Binxia. Technical improvement of sour water stripping unit and operation problem research[J]. Total Corrosion Control, 2012, 26(7):44-49(in Chinese)
[5] 祝杨, 蔡华, 邓育瑾. 120 t/h酸性水汽提装置新技术工业应用[J]. 石化技术, 2016, 23(8):30-31,34 Zhu Yang, Cai Hua, Deng Yujin. Application of new technologies about the 120 t/h sour water stripping unit[J]. Petrochemical Industry Technology, 2016, 23(8):30-31,34(in Chinese)
[6] 金尚君. 酸性水汽提装置新技术工业应用[J]. 石化技术与应用, 2007, 25(6):527-530 Jin Shangjun. Application of new technologies in sour water stripping unit[J]. Petrochemical Technology & Application, 2007, 25(6):527-530(in Chinese)
[7] 孙崇帅, 姜恒, 宫红, 等. 炼油厂酸性水汽提装置换热器及汽提塔塔盘积垢的分析[J]. 石油化工, 2016, 45(6):719-724 Sun Chongshuai, Jiang Heng, Gong Hong, et al. Analysis of foulant of heat exchangers and stripper plates in refinery sour water stripping unit[J]. Petrochemical Technology, 2016, 45(6):719-724(in Chinese)
[8] 王锐, 林翠华, 魏东旭, 等. SH/T0162标准中润滑油基础油碱性氮测定方法准确度探讨[J]. 化学工程师, 2012, 43(5):29-30 Wang Rui, Lin Cuihua, Wei Dongxu, et al. Study on determination accuracy of basic nitrogen of lube oil base stock[J]. Chemical Engineer, 2012, 43(5):29-30(in Chinese)
[9] Yaws C. Chemical properties handbook:Physical, thermodynamics, environmental transport, safety & health related properties for organic & inorganic chemical[M]. New York:McGraw-Hill Professional,1998
[10] Yaws C L, Yang H, Hopper J R, et al. Organic chemicals water solubility data[J]. Chemical Engineering, 1990, 97(7):115-118, 168
[11] Paudler W W, Kress T J. The Skraup syntheses and NMR spectra of some methylnaphthyridines[J]. Journal of Heterocyclic Chemistry, 1967, 4(2):284-289
[12] Yasumasa S. Phthalic anhydride-substituted naphthyridine compounds, pigment dispersants, pigment compositions, and their dispersions:JP, 2008231012[P]. 2008-10-02
[13] 尚德生. 净化氨压机故障分析与处理[J]. 压缩机技术, 2010, 48(6):47-48 Shang Desheng. Analysis and treatment about the problems of purifying ammonia compressor[J]. Compressor Technology, 2010, 48(6):47-48(in Chinese)